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Combined technology for step fine utilization of gold in multi-ore-phase gold-bearing ores

A combined process and fine technology, applied in the direction of solid separation, wet separation, chemical instruments and methods, etc., can solve problems such as difficulty in obtaining better technical indicators, and achieve the effect of improving resource utilization

Inactive Publication Date: 2018-02-13
有研科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult to obtain better technical indicators by adopting traditional technological process and pharmaceutical system

Method used

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  • Combined technology for step fine utilization of gold in multi-ore-phase gold-bearing ores
  • Combined technology for step fine utilization of gold in multi-ore-phase gold-bearing ores
  • Combined technology for step fine utilization of gold in multi-ore-phase gold-bearing ores

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] An ore body in Xiaonangou, Dongwan, Henan, containing 1.55g / t gold, 0.56% Ca, 0.84% ​​Mg, 0.020% Pb, 0.062% Zn, 0.004% Cu, 4.67% Fe, Al 2 o 3 13.26%, SiO 2 63.21%, As<0.005%, S 0.84%. Gold-bearing ores with multi-mineral facies include well-crystallized and easily floating gold pyrite, natural gold dissociated from monomer, gold-bearing pyrite metasomatized by limonite, gangue fissure gold or / and gangue wrapped gold.

[0030] Step I: Grind the ore to -0.074mm 70%, perform rapid flotation on the well-crystallized easy-to-float golden pyrite and natural gold dissociated from the monomer, and obtain the fast-flotation gold concentrate 1, and the agent used is lime and dibutyl ammonium dithiophosphate, the dosage is respectively 500g / (t raw ore) and 10g / (t raw ore);

[0031] Step II: For the fast flotation tailings of step I, adopt four kinds of salts (sodium carbonate, sodium sulfide, sodium silicate, copper sulfate) as regulator and add collector to be replaced by li...

Embodiment 2

[0036] An ore body in Qianhe, Henan, containing 4.47g / t gold, 0.36% Ca, 0.94% Mg, 0.010% Pb, 0.052% Zn, 6.67% Fe, Al 2 o 3 12.23%, SiO 2 60.20%, As<0.005%, S 1.14%. Gold-bearing ores with multi-mineral facies include well-crystallized and easily floating gold pyrite, natural gold dissociated from monomer, gold-bearing pyrite metasomatized by limonite, gangue fissure gold or / and gangue wrapped gold.

[0037] Step I: Grind the ore to -0.074mm 90%, perform rapid flotation on the well-crystallized and easy-to-float gold pyrite and exposed natural gold to obtain rapid flotation gold concentrate 1, and the agents used are lime and dibutyl Ammonium dithiophosphate, consumption is respectively 500g / (t raw ore) and 15g / (t raw ore);

[0038] Step II: For the fast flotation tailings of step I, adopt four kinds of salts (sodium carbonate, sodium sulfide, sodium silicate, copper sulfate) as regulator and add collector to be replaced by limonite into residual loading Golden pyrite is ...

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Abstract

The invention discloses a combined technology for step fine utilization of gold in multi-ore-phase gold-bearing ores. The combined technology comprises the following steps that (1) the ores are groundto the certain particle size, well-crystallized floatable gold-bearing pyrites and monomer dissociative native gold are quickly floated, and first gold concentrates are obtained; (2) as for quickly-floated tailings in the step (1), sodium carbonate, sodium sulphide, sodium silicate and copper sulfate are adopted as regulators, and collectors are added to conduct strengthened floatation on the gold-bearing pyrites which are replaced into residues by limonite; (3) rough concentrates obtained through strengthened floatation are finely selected to obtain second gold concentrates which are combined with the first gold concentrates obtained through quick floatation into final flotation concentrates, and middlings generated in fine selection are incorporated into the tailings after strengthenedfloatation to become final floatation tailings; and (4) after the generated final floatation tailings are ground again or not ground again according to the ore characteristics, cyaniding stirring is conducted to extract the gold in a leaching mode. Through the combined technology, step fine utilization of the gold in the multi-ore-phase gold-bearing ores can be achieved, and the resource utilization rate is increased accordingly.

Description

technical field [0001] The invention relates to a combined process for cascade fine utilization of gold in multi-mineral phase gold-bearing ores. Background technique [0002] The abundance value of gold in the earth's crust is very low, and it has properties such as sulfophilicity and ironophilicity. Therefore, for gold-bearing ores with multiple mineral facies in nature, there are various enrichment processes for gold selection. Diverse and complex, the corresponding gold recycling process, technology, and pharmaceutical system become more complicated. Among the existing multi-phase gold-bearing ores in China, the gold-bearing minerals of gold include pyrite, residual pyrite metasomatized by limonite, gangue fissure gold or / and gangue wrapped gold. It is difficult to obtain better technical indicators by adopting traditional technological process and pharmaceutical system. Contents of the invention [0003] The purpose of the present invention is to provide a combined ...

Claims

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Application Information

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IPC IPC(8): B03B7/00B03B9/00B03D1/018B03D101/02B03D103/02
CPCB03B7/00B03B9/00B03D1/018B03D2201/02B03D2203/025
Inventor 李文娟宋永胜刘爽周桂英蔡镠璐屈伟陈勇周成英
Owner 有研科技集团有限公司